Brake-shoe key lock



0. HENINGER.

BRAKE SHOE KEY LOCK. APPUCATION FILED MAR-13, 1922.

1,435,523. Patented Nov. 14, 1922.

Patented Nov, 14, 1922.

' T all nihoin amt concern 1 H citizen of the United statesfandairesident of Toledo, inthe county of Lu'cas and State of 'Ohio, havemade an invention apper Application filed Marcl S a1 Raid 13,340,

Be it known that I, OT O H'E'Niiieiiiufa taining to a Brake-Shoe KeyfLock, and

do hereby declare thefollowing to be aifull',

clear aiid exact-description of the invention, suchas willenable othersskilled inf-the art to which it. appertaiiistomake and use the followingspecification, and while in its broader aspect it is capable ofembodiment in numerous forms, a preferred embodiment. thereof isillustrated in the accompanying drawings, in which, 1 a Figure 1 is aside elevation; of abrake head, shoe and key in assembled relation witha part broken away. Fig. 2 is a face view of the brake head and key inassembled relation with the brake shoe removed. Figs.

3 and 4 are different views of the key, and

Fig. 5 is a perspective fragmentary view of an end portion of the brakehead showing the'key engaging stud thereof.

Referring to the drawings,'l designates a 1 brake head of ordinaryconstruction, 2 a brake-shoe for fitting to the head, and 3a key forengaging the break-head and shoe in the usual manner for securing themin assembled relation, as well understood in.

the art. a

The brake-head is provided at each end of "or form of the partsillustrated, as it is ca pable of numerous: modifications-and changes 1;t 7,

without dep ring fromthe spirit of the l I:

its shoe securing face with a pair of transversely spaced lugs forengagement with the ends of a brakeshoe, and is provided at the centralportion of its shoe receiving face with a pair of crossings 5, which arespaced longitudinally of the headto form a recess 6, having tapered sidewalls therebetween. The brake shoe 2 bears at its inner side against theend and center lugs 4 and 5 and is provided centrally'ofits ends withflacr0ss-. lug 7 for fitting into the recess 6 of the head,

as shown. The crosslugs 5 and 7 of the head and shoe are providedtherethrough eesaw h present consist key ayyvh cns p elongated'strfi-p.pret st 'ably f r sihentmamr" I claim as new, anddesire to securebyLet;*ters Patent, is, f v 1. A brake shoe] key lock comprising incombination, a brake-head having astudon" its brake-shoe receivingface,'and akeyfor securing. a brake-shoe to the head andghav ing alongitudinally extending slot whichfis U1 Parent? receiving open ngs sble'drelat 1 i ov is coIIiTInQ Iii'i' -de'vi character? I a g l, faiteiid ngf r i f an, a v s thereo .-pr ferably=pastit eentjefan fi 'ayvided intermediate its ends and preferably adjacent to its other endwithga cro ss'sl'ot' or transverse enlargement 9, so that ;the

slot in the formshowni's'of erosssh'ape'. A key engagin stud vl0 isprovided on the" inner side ofj'the brake; head near :one end thereofandis of awidth to adapt it to enter the key slot 8 and tofhave free''longitudinal} sliding engagement therewith. Thestud fis provided at itsouter 'oi freeendwith oppo sitely projecting ears 11. sov that it sOuter end in the present instance is of T-fo rm I complemental to the.T-fOI'IIl of key Slotto pt it to'beengaged with the 'Sioeu onys";

an insertion-of the ears ll through the side enlargements of the; slot.Whenthe ears 11 have been inserted through theslot" en'largementQ, thekeyjma'ythen'be longi: tudinally moved relative to the studfwiththe 1ears in llappingeng'agement with the, outer side walls ofthe key'slottoprevent asep-y aration or disengagement of the key from:

the stud, except when. the ears llf-are in registern with theenlargement 9 of "theqs'lotQ It is evident that I have 'provided'a'sinple andeffici'ent key holding j neans the parts of whichare'capabler'of easyfinterengagement upon an assembly of the parts andacts,

I .95 I. to efficiently retain the key in:locked rela'-' tion to thebrake head "and shoe. a 1

I wish it understood'that-my invention if notliinited to anyconstruction, arrangementl f j 10 0 claims.

adapted to receive the studand cooperate therewith to retain the key inengagement With the head except when the key is at a predetermined pointin its assembling movement. I g g 2. In combination, a brake-head havinga stud projecting from its brake-shoeengag ing face near one endthereof, said stud having an enlargement atit's-outerend ,por'

tion, a brake-shoe, and a key adapted tobe inserted'into holdingengagement With the brake-head and shoe longitudinallybetween portionsof the saineiand having a longitudinally extending slot With anenlargement therein for the projection of the stud en'- largementtherethrough after'which the key,

shoe, and a key insertable between the head and shoe longitudinallythereof and in holding interengageme nt therewith, the brake headhaving. a stud projectingfrorn its shoe engaging face. and the keyhaving a longitudinally extendin slot for receiving the stud duringpredetermined longitudinal movements of the key relative to the head,the key slot having an enlargement in a side Wall thereof and the studhaving a laterally projecting ear at its outer .end for projectingthrough the slot enlargement and coacte ing with a marginal side Wallportion of the I slot to retain the key' and stud in intereng agementduring predetermined portions of relative movements thereof.

In testimony whereof I have hereunto signed my name tothisspecifi'cation.

